Sintering pure polycrystalline zirconium carbide ceramics with enhanced mechanical properties under high-pressure and high-temperature

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-11-28 DOI:10.1016/j.jeurceramsoc.2024.117115

Peng Yang , Fang Peng , Xiong Xiao , Jie Chen , Haidong Long , Ruiqi He , Wenjia Liang , Ling Ran , Peihong He

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Abstract

Pure polycrystalline zirconium carbide (ZrC) ceramics were fabricated using high-pressure and high-temperature (HPHT) methods, and a systematic and comprehensive study of their properties was conducted. ZrC ceramics sintered at 5.0 GPa pressure and 1300 °C displayed optimal properties, with a Vickers hardness of 27.4 GPa and an indentation fracture toughness of 4.3 MPa·m^1/2, which are 29 % and 39 % higher than the reported experimental data, respectively. Additionally, they had an average grain size of approximately 425 ± 153 nm, a relative density near 98.5 %, a Young's modulus of 412 GPa and an oxidation onset temperature of 713 ℃. This study offers critical insights into the sintering of pure, polycrystalline and fine-grained ceramics and provides a preparation method for improving the mechanical properties of other new ultra-high temperature ceramics (UHTCs).

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在高压和高温条件下烧结具有增强力学性能的纯多晶碳化锆陶瓷

采用高压高温法制备了纯多晶碳化锆（ZrC）陶瓷，并对其性能进行了系统、全面的研究。在5.0 GPa压力和1300℃下烧结的ZrC陶瓷性能最佳，维氏硬度为27.4 GPa，压痕断裂韧性为4.3 MPa·m1/2，分别比实验数据提高了29 %和39 %。此外，它们的平均晶粒尺寸约为425±153 nm，相对密度接近98.5 %，杨氏模量为412 GPa，氧化起始温度为713℃。该研究为纯、多晶和细晶陶瓷的烧结提供了重要的见解，并为改善其他新型超高温陶瓷（UHTCs）的机械性能提供了一种制备方法。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.